High-strength brake drum beneficial to heat dissipation

Abstract

The utility model belongs to the technical field of brake drums, and particularly discloses a high-strength brake drum beneficial to heat dissipation, which comprises a brake drum main body, and a connecting end is integrally arranged on the side edge of the brake drum main body; the outer end of the periphery of the brake drum body is sleeved with an annular steel hoop, a certain interval is formed between the outer peripheral wall of the brake drum body and the annular steel hoop, reinforcing ribs are arranged in the interval, the reinforcing ribs are welded and fixed to the outer peripheral wall of the brake drum body, the reinforcing ribs comprise a plurality of sets of annular hoops and axial hoops, and the annular hoops and the axial hoops are arranged on the outer peripheral wall of the brake drum body. Axial hoops are arranged at six equal parts of the peripheries of the multiple groups of annular hoops, and the two ends of each axial hoop extend out of the two annular hoops at the outermost ends; a fixing ring is arranged on the other side, provided with the connecting end, of the brake drum body, the fixing ring is installed on the side wall of an annular steel hoop, the periphery of the fixing ring and the periphery of the annular steel hoop are located on the same curved surface, and the inner periphery of the fixing ring is attached to the peripheral wall of the brake drum body.

Description

Technical Field

[0001] The utility model relates to the technical field of brake drums, in particular to a high-strength brake drum conducive to heat dissipation. Background Technique

[0002] An automotive drum brake uses a brake transmission mechanism to press brake shoes against the inner side of a brake drum with brake friction linings, thereby generating braking force, and decelerating the wheels or stopping the vehicle within the shortest distance as required to ensure driving safety and ensure reliable parking of the vehicle without automatic slipping.

[0003] A brake drum is a cast iron part similar in shape to a tambourine. It is fixed to a tire and rotates at the same speed. When braking, hydraulic pressure is used to push the brake shoes to contact the inner edge of the brake drum, and the generated frictional force by the contact is used to inhibit the rotation of the tire to achieve the purpose of braking. At present, users' requirements for vehicle comfort are increasing day by day, vehicles are getting larger and larger, and the required braking force is also getting larger and larger.

[0004] In the case of high-speed or continuous braking, the brake pads may generate thermal stress due to overheating caused by friction. This thermal stress may cause the brake pads to deform or be damaged and be transmitted to the brake drum. If the self-strength of the brake drum is insufficient, cracks are very likely to occur and the drum may burst, and driving safety cannot be guaranteed. Content of the Utility Model

[0005] The purpose of the utility model is to provide a high-strength brake drum conducive to heat dissipation to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A high-strength brake drum conducive to heat dissipation, including a brake drum main body, on the surface of the brake drum main body, a number of heat dissipation holes are arranged at intervals in an array; on the side of the brake drum main body, a connection end is integrally provided, and on the end face of the connection end, a number of connection holes are arranged in an annular array; an annular steel hoop is sleeved on the outer end of the outer periphery of the brake drum main body, and there is a certain interval between the outer peripheral wall of the brake drum main body and the annular steel hoop, and reinforcing ribs are arranged in the interval, the reinforcing ribs are welded and fixed on the outer peripheral wall of the brake drum main body, the reinforcing ribs include multiple groups of annular hoops and axial hoops, the annular hoops are arranged closely against the outer peripheral wall of the brake drum, axial hoops are arranged at the six equal parts of the outer circumferences of multiple groups of annular hoops, and both ends of the axial hoops extend outside the two outermost annular hoops; on the other side of the brake drum main body where the connection end is provided, a fixing ring is arranged, the fixing ring is installed on the side wall of the annular steel hoop, the outer periphery of the fixing ring and the outer periphery of the annular steel hoop are on the same curved surface, and the inner periphery of the fixing ring is attached to the outer peripheral wall of the brake drum main body.

[0007] Preferably, the heat dissipation holes on the brake drum body penetrate from one end of the drum wall to the other end to form a heat dissipation channel. The cross-section of the heat dissipation hole is a regular hexagon, and the heat dissipation hole is inclined.

[0008] Preferably, the connection of the annular steel hoop is fixed with screws.

[0009] Preferably, the annular hoop is arranged between the end faces of two adjacent circles of heat dissipation holes, and the axial hoop is also arranged between two groups of axial heat dissipation holes.

[0010] Preferably, a limiting groove is arranged on the inner side wall of the annular steel hoop, and the limiting groove is arranged corresponding to the shape of the reinforcing rib.

[0011] Preferably, a plurality of fixing ears are arranged in an annular array on the outer peripheral wall of the fixing ring. The fixing ears are arranged corresponding to the position of the axial hoop, and a water spraying pipe is installed on each fixing ear. The water outlet of the water spraying pipe faces the outer peripheral wall of the annular steel hoop.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows: The present utility model arranges the reinforcing rib and the annular steel hoop on the periphery of the brake drum body, effectively improving the strength and mechanical properties of the cylindrical part of the brake drum body. The dynamic balance is better during rotation, it is not easy to burst, the service life is prolonged, and the safety is increased. Through the inclined heat dissipation holes, the heat dissipation holes penetrate from one end of the drum wall to the other end to form an effective heat dissipation channel, playing a role in air flow guiding. When the vehicle body is running, the brake drum body rotates clockwise with the wheel. The flowing air makes the internal hot air flow out through the heat dissipation holes to the space between the outer peripheral wall of the brake drum body and the annular steel hoop and then flow to the outside of the brake drum. At the same time, in cooperation with the water spraying pipe and the connected water cooling system, the heat dissipation efficiency is further increased, and the phenomenon of heat fade caused by overheating of the brake drum during braking is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the whole of the present utility model;

[0014] Figure 2 is a schematic side sectional structural diagram of the whole of the present utility model;

[0015] Figure 3 is a schematic structural diagram of the parts of the annular steel hoop and the reinforcing rib of the present utility model;

[0016] Figure 4 is a schematic structural diagram of the part of the brake drum body of the present utility model;

[0017] Figure 5 is a sectional view of the part of the brake drum body of the present utility model.

[0018] In the figure: 1. Brake drum body; 2. Connection end; 3. Heat dissipation holes; 4. Connection holes; 5. Ring steel hoop; 6. Screw; 7. Limit groove; 8. Fixed ring; 9. Fixed ear; 10. Water spraying pipe; 11. Reinforcing rib; 12. Ring hoop; 13. Axial hoop. Detailed implementation manner

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0020] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "vertical", "upper", "lower", "horizontal", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0021] In the description of the present invention, it should also be noted that unless otherwise clearly defined and limited, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0022] Please refer to Figures 1-5, the present utility model provides a technical solution: a high-strength brake drum conducive to heat dissipation, including a brake drum main body 1, on the surface of the brake drum main body 1, a number of heat dissipation holes 3 are arranged at intervals in an array, on the side of the brake drum main body 1, a connection end 2 is integrally provided, on the end face of the connection end 2, a number of connection holes 4 are arranged in an annular array; an annular steel hoop 5 is sleeved on the outer end of the outer periphery of the brake drum main body 1, there is a certain interval between the outer peripheral wall of the brake drum main body 1 and the annular steel hoop 5, and reinforcing ribs 11 are arranged in the interval, the reinforcing ribs 11 are welded and fixed on the outer peripheral wall of the brake drum main body 1, the reinforcing ribs 11 include multiple groups of annular hoops 12 and axial hoops 13, the annular hoops 12 are arranged closely against the outer peripheral wall of the brake drum, axial hoops 13 are arranged at six equal parts of the outer circumference of multiple groups of annular hoops 12, and both ends of the axial hoops 13 extend outside the two outermost annular hoops 12; on the other side of the brake drum main body 1 where the connection end 2 is provided, a fixing ring 8 is arranged, the fixing ring 8 is installed on the side wall of the annular steel hoop 5, the outer periphery of the fixing ring 8 and the outer periphery of the annular steel hoop 5 are on the same curved surface, and the inner periphery of the fixing ring 8 is attached to the outer peripheral wall of the brake drum main body 1.

[0023] Further, the heat dissipation holes 3 on the brake drum main body 1 penetrate from one end of the drum wall to the other end to form a heat dissipation channel, the cross section of the heat dissipation holes 3 is a regular hexagon, and the heat dissipation holes 3 are inclined.

[0024] Further, the connection part of the annular steel hoop 5 is fixed by screws 6.

[0025] Further, the annular hoops 12 are arranged between the end faces of two adjacent circles of heat dissipation holes 3, and the axial hoops 13 are also arranged between two groups of axial heat dissipation holes 3.

[0026] Further, a limiting groove 7 is arranged on the inner side wall of the annular steel hoop 5, and the limiting groove 7 is arranged corresponding to the shape of the reinforcing ribs 11.

[0027] Further, a number of fixing ears 9 are arranged in an annular array on the outer peripheral wall of the fixing ring 8, the fixing ears 9 are arranged corresponding to the positions of the axial hoops 13, and a water spraying pipe 10 is installed on each fixing ear 9, and the water outlet of the water spraying pipe 10 faces the outer peripheral wall of the annular steel hoop 5.

[0028] Working principle: The utility model provides a high-strength brake drum that is conducive to heat dissipation, including a brake drum main body 1. A number of heat dissipation holes 3 are arranged at intervals in an array on the surface of the brake drum main body 1. A connection end 2 is integrally provided on the side of the brake drum main body 1. A number of connection holes 4 are arranged in an annular array on the end face of the connection end 2; An annular steel hoop 5 is sleeved on the outer end of the outer periphery of the brake drum main body 1. There is a certain interval between the outer peripheral wall of the brake drum main body 1 and the annular steel hoop 5. Reinforcing ribs 11 are arranged in the interval. The reinforcing ribs 11 are welded and fixed on the outer peripheral wall of the brake drum main body 1. The reinforcing ribs 11 include multiple groups of annular hoops 12 and axial hoops 13. The annular hoops 12 are arranged closely against the outer peripheral wall of the brake drum. Axial hoops 13 are arranged at the six equal division points of the outer circumferences of multiple groups of annular hoops 12. Both ends of the axial hoops 13 extend outside the two outermost annular hoops 12; On the other side of the brake drum main body 1 where the connection end 2 is provided, there is a fixing ring 8. The fixing ring 8 is installed on the side wall of the annular steel hoop 5. The outer periphery of the fixing ring 8 and the outer periphery of the annular steel hoop 5 are on the same curved surface. The inner periphery of the fixing ring 8 is attached to the outer peripheral wall of the brake drum main body 1; The utility model arranges the reinforcing ribs 11 and the annular steel hoop 5 on the periphery of the brake drum main body 1, effectively improving the strength and mechanical properties of the cylindrical part of the brake drum main body 1. The dynamic balance is better during rotation, it is not easy to burst, the service life is prolonged, and the safety is increased. Through the inclined heat dissipation holes 3 in the utility model, the heat dissipation holes 3 penetrate from one end of the drum wall to the other end, forming an effective heat dissipation channel and playing a role in air flow guiding. When the vehicle body is running, the brake drum main body 1 rotates clockwise along with the wheel. The flowing air makes the internal hot air flow out through the heat dissipation holes 3 to the interval between the outer peripheral wall of the brake drum main body 1 and the annular steel hoop and then flow to the outside of the brake drum. At the same time, in cooperation with the water spraying pipe 10 and the connected water cooling system, the heat dissipation efficiency is further increased, and the phenomenon of heat fade caused by overheating of the brake drum during braking is avoided.

[0029] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A high-strength brake drum conducive to heat dissipation, characterized in that: It includes a brake drum body (1). A number of heat dissipation holes (3) are arranged at intervals in an array on the surface of the brake drum body (1). A connection end (2) is integrally provided on the side of the brake drum body (1). A number of connection holes (4) are arranged in an annular array on the end face of the connection end (2); An annular steel hoop (5) is sleeved on the outer end of the outer periphery of the brake drum body (1). There is a certain interval between the outer peripheral wall of the brake drum body (1) and the annular steel hoop (5). Reinforcing ribs (11) are arranged in the interval. The reinforcing ribs (11) are welded and fixed on the outer peripheral wall of the brake drum body (1). The reinforcing ribs (11) include multiple groups of annular hoops (12) and axial hoops (13). The annular hoops (12) are arranged closely against the outer peripheral wall of the brake drum. Axial hoops (13) are arranged at the six equal division points of the outer circumference of multiple groups of annular hoops (12). Both ends of the axial hoop (13) extend outside the two outermost annular hoops (12); On the other side of the brake drum body (1) where the connection end (2) is provided, a fixing ring (8) is arranged. The fixing ring (8) is installed on the side wall of the annular steel hoop (5). The outer periphery of the fixing ring (8) is on the same curved surface as the outer periphery of the annular steel hoop (5). The inner periphery of the fixing ring (8) is in contact with the outer peripheral wall of the brake drum body (1).

2. The high-strength brake drum conducive to heat dissipation according to claim 1, wherein: The heat dissipation holes (3) on the brake drum body (1) penetrate from one end of the drum wall to the other end to form a heat dissipation channel. The cross-section of the heat dissipation hole (3) is a regular hexagon. The heat dissipation hole (3) is inclined.

3. The high-strength brake drum conducive to heat dissipation according to claim 1, characterized in that: Screws (6) are used for fixing at the connection of the annular steel hoop (5).

4. A high-strength brake drum facilitating heat dissipation according to claim 1, characterized in that: The annular hoop (12) is arranged between the end faces of two adjacent circles of heat dissipation holes (3). The axial hoop (13) is also arranged between two groups of axial heat dissipation holes (3).

5. The high-strength brake drum conducive to heat dissipation according to claim 1, wherein: Limit grooves (7) are arranged on the inner side wall of the annular steel hoop (5). The limit grooves (7) are arranged corresponding to the shape of the reinforcing ribs (11).

6. The high-strength brake drum conducive to heat dissipation according to claim 1, characterized in that: A number of fixing ears (9) are arranged in an annular array on the outer peripheral wall of the fixing ring (8). The fixing ears (9) are arranged corresponding to the positions of the axial hoops (13). A water spraying pipe (10) is installed on each fixing ear (9). The water outlet of the water spraying pipe (10) faces the outer peripheral wall of the annular steel hoop (5).

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